Texas Instruments LM3448 -120VAC, 6W Isolated Flyback LED Driver Eval Board LM3448-120VFLBK/NOPB LM3448-120VFLBK/NOPB 데이터 시트
제품 코드
LM3448-120VFLBK/NOPB
LED +
LED -
LINE
NEUTRAL
J5
TP3
TP2
TP4
TP5
J6
Demo Board Wiring Overview
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Demo Board Wiring Overview
Figure 23. Wiring Connection Diagram
Table 2. Test Points
Test
Name
I/O
Description
Point
TP3
LED +
Output
LED Constant Current Supply
Supplies voltage and constant-current to anode of LED string.
Supplies voltage and constant-current to anode of LED string.
TP2
LED -
Output
LED Return Connection (not GND)
Connects to cathode of LED string. Do NOT connect to GND.
Connects to cathode of LED string. Do NOT connect to GND.
TP5
LINE
Input
AC Line Voltage
Connects directly to AC line or output of TRIAC dimmer of a 120VAC system.
Connects directly to AC line or output of TRIAC dimmer of a 120VAC system.
TP4
NEUTRAL
Input
AC Neutral
Connects directly to AC neutral of a 120VAC system.
Connects directly to AC neutral of a 120VAC system.
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Demo Board Assembly
Figure 24. Top View
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AN-2090 LM3448 -120VAC, 6W Isolated Flyback LED Driver
SNOA554C – October 2011 – Revised May 2013
Copyright © 2011–2013, Texas Instruments Incorporated